Paper machinery



Dec. 1, 1959 R. w. PHELPS 2,915,255

PAPER MACHINERY Filed May 19, 1955 FIG-1 11 IN VEN TOR.

RICHARD W. PHELPS ATTORNEYS United States Patent PAPER MACHINERYApplication May 19, 1955, Serial No. 509,575

8 Claims. (Cl. 242-56) This invention relates to continuous windingapparatus for web materials, and more particularly to such apparatuscapable of winding plastic web materials as well as paper and the like.

The invention is directed particularly to continuous winding apparatusof the surface driven type wherein each successive new roll is startedagainst a driving drum while carried by primary supports and is thentransferred to secondary supports to complete winding of the roll whileremaining in driven surface engag'ement'with the drum. The major concernof the invention is the control of the transfer of the web from acomplete roll to a new core to provide a smooth and even start on thenew core without reduction in speed or loss of tension in the web.

It is a primary object of the-present invention to provide apparatus ofthe drum driven type for continuously winding web materials wherein themechanism for transferring the advancing web from a full roll to a newcore includes a guide member such as a guide roll mounted for movementfrom a retracted position to an advanced guiding position locatedbetween the new core and the full roll and in spaced relation with thecore such as to cause partial enveloping of the new core by the web, andwherein the actual transfer of the web is effected by a severing memberoperable in the space between the core and the guide member in suchmanner as to sever the unsupported .web in this space and to cause theresulting leading end of the web to start winding on the core.

An additional object of the invention is to provide continuous windingapparatus of the drum driven type as outlined above for web materialswherein a knife member for severing the web is carried by the movableguide member for preliminary movement with the guide member between itsretracted and advanced positions and is then movable with respect to theguide member through the space between the guide member and the new coreto carry out its severing and web directing steps.

Another object of the invention is to provide a continuous drum drivenwinder for web materials in which the web transferring mechanism isbrought to its advanced position before actuation of the knife in orderto enable the operator to check conditions before the web is ,cut, andalso in which the stroke of the knife is both quick and short tominimize shock and to complete the web transfer with minimum possibilityof developing foldback or other uneven conditions at the start of theroll It is also an object of the invention to provide a winder generallyas outlined above wherein the actual severing of the web is caused bythe movement of the new core into engagement with the drum and theresulting deflection of the web into engagement with the knife.

Other objects and advantages of the invention will be apparentfrom thefollowing description, the accompanying drawing and the appended claims.

In the drawing Fig. lis a rear elevational view of a continuous winderconstructed in. accordance with the invention and with some of the partsbroken away for increased clarity;

Fig. 2 is a side elevation looking from right to left in Fig. 1 with thedrive removed;

Fig. 3 is an enlarged fragmentary section on the line 3-3 of Fig. 2; and

Fig. 4 is an enlarged fragment of Fig. 2 illustrating the positions ofcertain of the parts at the precise instant of severing the web for thestart of a new roll.

Referring to the drawing, which illustrates a preferred embodiment ofthe invention, the continuous winder shown in Figs. 1 and 2 is generallyof the Pope type and includes a base frame 10 on which a continuouslyrotating driving drum 11 is-mounted by means of bearings in brackets 12.The drive for the drum is indicated at 13 and is transmitted to a driveshaft 15 mounted at the back of the frame, and the drum shaft 16 is inturn connected with drive shaft 15 by means of the chain drive indicatedgenerally at 17.

The primary arms 20 include yoke portions 19 at their outer ends forsupporting each successive new. core 22 and are mounted on boss portions21 of the brackets 12 for swinging movement eccentrically of the drumaxis. This movement is effected and controlled by segments 23 at thelower ends of the primary arms which mesh with pinions 24 on a shaft 25extending across the front of the frame and carrying a hand Wheel 26 atthe control side of the winder. Each primary arm 20 also carries apivotally mounted finger 27 operated by a small air cylinder 28 forholding the core shaft 29-for each new core in the yoke portions 19 toaid in obtaining initial pressure engagement of the core against thedrum.

A pair of secondary arms 30 receive the new core from the primary armsafter the web is winding thereon and support the roll during completionof its winding. These secondary arms are supported by a rock shaft 31which is mounted at the back of the frame 10 coaxially with the driveshaft 15. The connection between each secondary arm 30 and the rockshaft 31 is adjustable and comprises a crank arm 33 pinned or keyed tothe rock shaft and extending between a pair of inwardly turned ears34011 the adjacent arm 30. Adjusting bolts 35 are threaded through theears 34 and engage the side edges of the associated arm 30 to adjust theangular relation between each arm 30 and its associated crank arm 33 inorder to assure proper alignment of the arms and an accurately parallelrelation between the surface of drum 11 and each winding roll carried bythe arms 30. Through bolts 36 may be employed to secure each arm 30 andits associated crank arm in adjusted position, one or both of thesemembers being slotted to receive bolt'36 while providing for therelative adjusting movement thereof.

The secondary arms 30 are movable between the inclined position shown inbroken lines in Fig. 2 and the erect position shown in full line in Fig.2 in which they support the full roll 40 out of engagement with drum 11.Tn their inclined position, bosses 41 on arms 30 rest on adjustablebolts 42 in the top of frame 10, and latches 43 on the yoke portion ofthe upper end of each arm provide for direct entry of a core 22 butrequire manual release for removal of the core shaft. Movement of arms30 to their erect position is effected and controlled by a fluidpressure cylinder 44 mounted in base 10 and having its piston rodconnected to an arm 45 depending from rock shaft 31.

A supplemental drive is provided for rotating a full roll supported inthe erect position of the secondary arms 30 to control the tension inthe web when the full roll is retracted out of contact with the drumbefore the web'is severed and started on the new core. A supplementalarm 50 on rock shaft 31 supports a shaft 51 and pulley 52 connected bybelts 53 with a drive pulley 54 which is carried by one member of an airclutch 55 on shaft 15 and is caused to rotate when clutch 55 is engaged,the

air connection for clutch 55 being indicated at 56. The pulley shaft 51is in turn connected with each core shaft 29 in arms 30 by a jaw clutch57 operated by an air cylinder 58 carried by arm 50 and operatingthrough a bell crank 59. Since this drive is centered on the same axisas the arms 30, it is unaffected by swinging movement of the secondaryarms.

The web severing and transferring mechanism provided in accordance withthe present invention includes a pair of arms 60 mounted on the bossportions 21 of brackets 12 for swinging movement coaxially with theprimary arms 20. Movement of arms 60 is eifected and controlled by adouble-acting pressure cylinder 61 mounted in the base and having itspiston rod connected to a crank arm 62 secured to a sleeve 63 rotatableon shaft 25. At each end of sleeve 63 is a gear 65 meshing with asegment 66 carried by arms 60.

The arms 60 carry a guide roll 70 at their outer ends, and this guideroll may conveniently be formed of hollow construction and provided atits ends with rotary unions 71 for connection to a source of coolingfluid, as may be desired when the winder is employed by handling plasticfilm. A knife blade 72 is carried by collars 73 rotatably mounted at theends of rolls 70, and since this knife may advantageously beelectrically heated when the winder is used for plastic film, it isshown as mounted between insulating plates 74. Each of the collars 73includes a projecting arm 75 by which it is connected to an air cylinder77 having its opposite ends secured to the adjacent arm 60. Thus whenpressure is applied in the outer end of cylinder 77 to retract itspiston rod, the knife 72 will move in counterclockwise direction aroundthe axis of roll 70 as viewed in Fig. 4.

A pressure roll 80 is provided for controlled movement into and out ofengagement with the web against the drum 11 to aid in controlling thetension in the web. This pressure roll 80 is carried by a pair of leverarms 81 pivoted in brackets 82 at the front side of the frame 10, andthe lower ends of arms 81 are connected to the piston rods of a pair ofair cylinders 85 mounted in the frame 10. These cylinders provide formovement of the roll 80 between the normal pressure position shown infull lines in Fig. 2 and the retracted position shown in dotted lines inFig. 2 which the roll occupies during thread ing of a new web to thewinder.

In the operation of this winder, the roll 40 is carried by the secondaryarms 30 during the major portion of its winding, with the arms 30 beinginclined toward the drum so that the roll rests against the drum fordriving thereby, and the position of the arms 30 therefore graduallyapproaches the vertical as the diameter of the roll increases. Ifdesired, the clutches 55 and 57 may be engaged to provide a helper driveto the mandrel of the winding roll. During this stage of the windingoperation, the primary arms 20 are moved sufficiently in clockwisedirection from the position shown in Fig. 2 to hold the new core 22 outof engagement with the web, and if desired, adhesive may be applied tothis new core in preparation for the web change.

The controls for the several air cylinders in the winder may be ofconventional design and arrangement, and they are therefore not shown.It is desirable, however, to operate the cylinder 61 for arms 60 intimed relation with the movements of the secondary arms 30, and acontrol valve 89 for cylinder 61 is mounted in the base in position foroperation of its control plunger 90 by arm 45 in the vertical positionof arms 30. In the normal position of valve 89, when its plunger 90 isnot depressed by arm 45, arms 60 will occupy the position indicated indotted lines in Fig. 2 to hold the guide roll 70 in its retractedposition.

When winding of the full roll 40 is almost completed and the change tothe new core isto be made, the first step is to operate cylinders 44 toshift the secondary arms 30 to their vertical position shown in Fig. 2and thus to retract the roll 40 out of engagement with the drum. Ifclutches 55 and 57 were not already in engagement, they should beengaged prior to retraction of arms 30 in order to drive roll 40 throughits core shaft 29 for properly maintained web tension. As soon as arms30 reach their limit vertical position, arm 45 will operate valve 89 tocause cylinder 61 to bring arms 60 to their advanced full line positionin Fig. 2, thus completing preparation for the roll change. It will beapparent that with arms 60 in their advanced position and primary arms20 still retracted, the web path is clear of the new core and also ofthe retracted knife 72 because of the position of the guide roll 70 asindicated by the dotted line 88 in Fig. 4.

The primary arms 20 are then brought to their full line positions shownin Fig. 2, which will cause the new core to be brought into engagementwith the web 88 against the drum and driven for acceleration to webspeed, and at the same time the guide roll 70 will direct the web awayfrom the drum in the space between the new core and the full roll andthus cause partial enveloping of the new core by the web, as indicatedby the line 88" in Fig. 4. Then the operator actuates the knife byoperating the cylinders 77, and the knife swings in counterclockwisedirection as viewed in Figs. 2 and 4 through the space between the guideroll and the new core, thus severing the web 88 and directing itssevered leading end generally around the new core, as indicated in Fig.4,to start the web winding thereon.

After the roll change has thus been completed, the full roll is removedfrom the secondary arms 30, and they are returned to their loweredposition indicated in broken linesin Fig. 2. As soon as arms 30 movefrom their raised position, valve 89 will be released to cause cylinder61 to shift arms 60 to their lowered position, and during this interval,the new roll is winding in the primary arms. As soon as its diameter hasincreased sulficiently, it will ride out of the yokes at the upper endsof the primary arms and roll into the similar yokes in the secondaryarms. The winding will then continue in the secondary arms, while theprimary arms are again retracted to receive the next new core.

If desired, the sequence of operation can be varied by operating thecylinders 77 before the primary arms are shifted to the roll startingposition. In this event, the roll change will be effected automaticallyas soon as the primary arms move toward the drum, since the operation ofbringing the new core against the web and the drum will alter the webpath between the core and the guide roll 79 sufiiciently to draw the webacross the edge of the knife for severing. This mode of o eration isespecially advantageous with materials requiring a pressure sensitiveadhesive on the new core, since it assures a quick and even start of thenew roll as soon as the adhesive coated core surface comes firmly intocontact with the web and the drum. It is of course necessary for thisprocedure that the stroke of knife 72 stop in a location between thepositions 88' and 88" of the web shown in Fig. 4 in order to preventpremature cutting of the web, and if it is desired to utilize thisprocedure consistently, the cylinders 77 can be eliminated, and theknife 72 firmly secured to the arms 60 in such relative locations.

While the forms of apparatus herein described constitute preferredembodiments of the invention, it is to be understood that the inventionis not limited to these precise forms of apparatus, and that changes maybe made therein without departing from the scope of the invention whichis defined in the appended claims.

What is claimed is:

l. A continuous winder for web material comprisinga base frame, a singledriving drum on said frame to receive said web material thereon, primarysupporting means on said frame for receiving and supporting a new coreduring starting of the winding of the web thereon,

secondary supporting-means on said frame fortreceiving successive newcores from said primary supporting means after the web is windingthereon and for supporting each successive new core during completion ofthe winding of a full roll thereon, means cooperating with saidsecondary supporting means to retract said full roll out of engagementwith said drum while maintaining winding of the web thereon to providean unsupported length of the web extending from said drum to said roll,a guide member mounted on said frame for movement between said drum andsaid retracted full roll from a retracted position out of contact withthe web to an advanced position engaging said unsupported length of theweb, means cooperating with said primary supporting means to bring a newcore therein into driven contact with said drum through said unsupportedportion of the web between said guide member and said drum to acceleratesaid new core to web speed while causing partial enveloping of said newcore by the web, knife means carried by said guide member for movementtherewith, means supporting said knife means on said guide member formovement relative thereto between said guide member and said drum andbetween said guide member and said new core, and means for efiectingsaid movement of said knife means relative to said guide memberfollowing said movement of said guide member to said advanced positionand said engagement of said new core with the web to cause said knifemeans to sever said web between said guide member and said new core andthereby to cause the resulting severed leading end of the web to startwinding on said rotating new core.

2. A continuous winder for web material comprising a base frame, asingle driving drum on said frame to receive said web material thereon,primary supporting means on said frame for receiving and supporting anew core during starting of the winding of the web thereon, secondarysupporting means on said frame for receiving successive new cores fromsaid primary supporting means after the web is winding thereon and forsupporting each successive new core during completion of the winding ofa full roll thereon, means cooperating with said primary supportingmeans to bring a new core therein into driven contact with said drumthrough the web traveling to said full roll in said secondary supportingmeans to accelerate said new core to web speed, means cooperating withsaid secondary supporting means to retract said full roll out ofengagement with said drum, supplemental drive means for rotating saidretracted roll through the core thereof to maintain the tension in theweb, a guide member mounted on said frame for movement between said drumand said retracted full roll from a retracted position out of contactwith the web to an advanced position spaced from said new core whereinsaid guide member engages the opposite side of the web from said newcore and causes partial enveloping of said new core by the web inadvance of severing of the web, knife means carried by said guide memberand movable relative thereto for severing the portion of the web in thespace between said guide member and said new core to cause the resultingsevered leading end of theweb to start winding on said rotating new coreand means for effecting operation of said knife means relative to saidguide member following said movement of said guide member to saidadvanced position.

3. A continuous winder for web material comprising a base frame, asingle driving 'drum on said frame to receive said web material thereon,primary arms on said frame for receiving and supporting a new coreduring starting of the winding of the web thereon, secondary arms onsaid frame for receiving successive new cores from said primary armsafter the web is winding thereon and for supporting each successive newcore during completion of the winding of a full roll thereon, meanscooperating with said secondary arms to retract said full roll out ofengagement with said drum-while maintaining Winding of the web thereonto provide an unsupported length of the web extending from said drum tosaid roll, a guide member mounted on said frame for movement betweensaid drum and said retracted full roll from a retracted position out ofcontact with the web to an advanced position engaging said unsupportedlength of the web, means cooperating with said primary arms to bring anew core therein into driven contact with said drum through saidunsupported portion of the web between said guide member and said drumto accelerate said new core to web speed while causing partialenveloping of said new core by the web, knife means carried by saidguide member for movement therewith, means supporting said knife meanson said guide member for movement relative thereto between said guidemember and said drum and between said guide member and said new core,and means for effecting said movement of said knife means relative tosaid guide member following said movement of said guide member to saidadvanced position and said engagement of said new core with the web tocause said knife means to sever said web between said guide member andsaid 'new core and thereby to cause the resulting severed leading end ofthe web to start winding on said rotating new core.

4. A continuous winder for web material comprising a base frame, asingle driving drum on said frame to receive said web material thereon,primary supporting means on said frame for receiving and supporting anew core during starting of the winding of the web thereon, secondarysupporting means on said frame for receiving successive new cores fromsaid primary supporting means after the web is winding thereon and forsupporting each successive new core during completion of the winding ofa full roll thereon, means cooperating with said secondary supportingmeans to retract said full roll out of engagement with said drum whilemaintaining winding of the web thereon to provide an unsupported lengthof the web extending from said drum to said roll, a guide membercomprising a guide roll mounted on said frame for movement between saiddrum and said retracted full roll from a retracted position out ofcontact with the web to an advanced position engaging said unsupportedlength of the web, means cooperating with said primary supporting meansto bring a new core therein into driven contact with said drum throughsaid unsupported portion of the web between said guide roll and saiddrum to accelerate said new core to web speed while causing partialenveloping of said new core by the web, a knife carried by said guideroll for movement therewith, means supporting said knife means on'saidguide member for movement relative thereto between said guide roll andsaid drum and between said guide member and said new core, and means foreffecting said movement of said knife relative to said guide rollfollowing said movement of said guide roll to said advanced position andsaid engagement of said new core with the web to cause said knife tosever said web between said guide roll and said new core and thereby tocause the resulting severed leading end of the web to start winding onsaid rotating new core.,

5. A continuous winder for web material comprising a base frame, asingle driving drum on said frame to receive said web material thereon,primary arms on said frame for receiving and supporting a new coreduring starting of the winding of the web thereon, secondary arms onsaid frame for receiving successive new coresv from said primary armsafter the web is winding thereon and for supporting each successive newcore during; completion of the winding of a full roll thereon, means.cooperating with said secondary arms to retract said full roll out ofengagement with said drum while maintain-- ing winding of the webthereon to provide an unsup-- ported length of the web extending fromsaid drum to: said roll, a guide member comprising a guide roll mount--edon said frame for movement between said drum and said retracted fullroll from a retracted position out of contact with the web to anadvanced position engaging said unsupported length of the web, meanscooperating with said primary arms to bring a new core therein intodriven contact with said drum through said unsupported portion of theweb between said guide roll and said drum to accelerate said new core toweb speed while causing partial enveloping of said new core by the web,a knife carried by said guide roll for movement therewith, meanssupporting said knife means on said guide member for movement relativethereto between said guide roll and said drum and between said guidemember and said new core, and means for effecting said movement of saidknife relative to said guide roll following said movement of said guideroll to said advanced position and said engagement of said new core withthe web to cause said knife to sever said web between said guide rolland said new core and thereby to cause the resulting severed leading endof the web to start winding on said rotating new core.

6. A continuous winder for web material comprising a base frame, asingle driving drum on said frame to receive said web material thereon,primary arms on said frame for receiving and supporting a new coreduring starting of the winding of the web thereon, secondary arms onsaid frame for receiving successive new cores from said primary armsafter the web is winding thereon and for supporting each successive newcore during completion of the winding of a full roll thereon, means forshifting said secondary arms to retract said full roll out of engagementwith said drum, a guide roll mounted on said frame for movement betweensaid drum and said retracted full roll from a retracted position out ofcontact with the Web to an advanced position spaced above the uppersurface of said drum to deflect upwardly the portion of the webtraveling from said drum to said full roll, severing means movable withsaid guide roll to an advanced position spaced between said guide rolland a new core in said primary arms and adjacent the path of travel ofthe web from said drum to said advanced position of said guide roll, andmeans cooperating with said primary arms to bring said new core thereininto driven contact with said drum through said portion of the webbetween said drum and said guide roll and thereby to deflect saidportion of the web downwardly into severing engagement with saidsevering means and at the same time to accelerate said new core to webspeed and thereby to cause the resulting severed leading end of the webto start winding thereon.

7. A continuous winder for web material comprising a base frame, asingle driving drum on said frame to receive said web material thereon,primary arms on said frame for receiving and supporting a new coreduring starting of the winding of the web thereon, secondary arms onsaid frame for receiving successive new cores from said primary armsafter the web is winding thereon and for supporting each successive new'core during completion of the winding of a full roll thereon, meanscooperating with said primary arms to bring each new core therein intodriven contact with said drum through the web traveling to said fullroll in said secondary arms to accelerate said new core to web speed,means for shifting said secondary arms to retract said full roll out ofengagement with said drum, supplemental drive means for rotating saidretracted roll through the core thereof to maintain the tension intheweb, a guide roll mounted on said frame for movement between said drumand said retracted full roll from a retracted position out of contactwith the web to an advanced position spaced from said new core whereinsaid guide roll engages the opposite side of the web from said new coreand causes partial enveloping of said new core by the web in advance ofsevering of the web, a knife carried by said guide roll for movementwith respect thereto in the space between said guide roll and said newcore in said advanced position of said guide roll, and means for causingsaid movement of said knife after said movement and enveloping action ofsaid guide roll and generally in the direction of rotation of said newcore to sever the portion of the web in said space and to cause theresulting severed leading end of the web to start winding on saidrotating new core.

8. A continuous winder for web material comprising a base frame, asingle driving drum on said frame to receive said web material thereon,primary arms on said frame for receiving and supporting a new coreduring starting of the winding of the web thereon, secondary arms onsaid frame for receiving successive new cores from said primary armsafter the web is winding thereon and for supporting each successive newcore during completion of the winding of a full roll thereon, meanscooperating with said primary arms to bring each new core therein intodriven contact with said drum through the web traveling to said fullroll in said secondary arms to accelerate said new core to web speed,means for shifting said secondary arms to retract said full roll out ofengagement with said drum, supplemental drive means for rotating saidretracted roll to maintain the tension in the web, a third pair of armspivotally mounted on said frame and carrying a guide roll for swingingmovement around said drum and between said drum and said retracted fullroll, means for swinging said arms to carry said guide roll from aretracted position below the web to an advanced position spaced betweensaid new core and said retracted full roll and in engagement with theopposite side of the web from said new core to cause partial envelopingof said new core by the web, a knife carried by said third arms forpivotal movement with respect thereto in the space between said guideroll and said new core, and means for causing upward pivotal movement ofsaid knife in said space in said advanced position of said guide roll tosever the portion of the web between said new core and said guide rolland to cause the resulting severed leading end of the web to startwinding on said rotating new core.

Man-m.

